Energy-transfer process in rare-earth-ion doped SrTiO3

被引：0

作者：

Okamoto, S ^{[1
]}

Tanaka, S ^{[1
]}

Yamamoto, H ^{[1
]}

机构：

[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Ikoma, Nara 6300101, Japan

来源：

PROCEEDINGS OF THE 2000 INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER | 2001年

关键词：

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Enhancement of emission intensity of rare-earth-ion doped SrTiO3 by Al addition has been investigated. In the case of Pr3+ and Tb3+, addition of 23-mol% Al intensifies emission by more than 200 times. In contrast, the addition of 20 mol% Al intensifies emission at most by three times in the case of other rare-earth ions. The temperature dependence of PL spectra shows that the energy transfer from carriers to Pr3+ or Tb3+ ions is much more efficient than that to other rare-earth ions in SrTiO3. It can be speculated that the energy transfer in SrTiO3 :Pr3+ or Tb3+ occurs from carriers to Pr3+ or Tb3+ ion via 4f-5d transitions, which are much higher in oscillator strength than 4f-4f transitions.

引用

页码：356 / 359

页数：4

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